Amplifier



March 25, 1930. J. v. GODBERY AMPLIFIER Filed Jan. 16, 1925 INVENTOR;

JUSEPH V. BDDHEHY .W ATTORNEY mama M". 25f 1930 UNITED STATES JosErn v. co lanar, or SAN FRANCISCO, cALn'oaNm AMPLIFIER Application filed January 16, 1925. Serial No. 8,890..

This invention relates to improvements in amplifiers and has particular reference to the employment of a shell or.similar structure for increasing or amplifying radio reception. 6 The principal object of this invention is to produce a device which will eliminate the metallic sounds common to many types of loud speakers, due to the vibration of the material out of which the same is made.

'Another object is to produce a device of this character which will have a sound chamber closely corresponding to the sound chamber of the human ear.

An additional object is to produce a device 15 of this. character'which will be artistic and therefore pleasing to the e e, in counter-distinction to the unsightly em as now generally employed. V

Other objects and advantages willbeap parent during the course of the following descri tion. g In t e accompanyin drawings forming; part of this specification and in'whichj-lik numerals are employed to designate'like throughout the same,

' human ear which amp may be construct ed from a sea-shell having the serpentine p therein or may be molded from any 'suitab e material which will not produce objectionable noises in itself. In the accompanying drawings, wherem for the urpose-of illustration 1s shown a preferred embodiment of my invention, the numeral 5 designates-the amplifier as a whole which may be molded, cast or otherwise formed or may be a shell and is provided with a assa e6 increasing in size an ameter rom t e small end 7 toward the opening 8 out-of which the sound is projected.

.i Figure 1 is a side elevation of my improvedv fier which represents a cockle-shell, and

This passage is serpentine in form and due to this peculiar form the true qualities of the music being directed therethrough is amplified and projected in all of its purity.

I bore-the end of the device so as to form a channel 9 connecting with the lowermost convolution of the passage 6 and to the end 7 I attach a simple reproducing unit 11, which is common to the radio trade. It will be noted that a seat 12 is provided in the reproducing unit for the purpose of readily ositionin therein the lower extremity o the ampli er 8, which lower extremity is curved i as at 13 to conform to the shape of the seat.

While the device is particularly adapted for use in radio reception, nevertheless, 'it is to be understood that it may be used in conreproducing sound. 1

o It will thus be seen that I have provided I, very simple device which when attached to :jreproducer will amplify the vibration being ive'n ofi b the reproducer without introducany vi rations from the amplifier itself. t .is to be understood that the form of my fivention herewith shown and described is "to .be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts ma be resorted to without departing from t e spirit of the invention or the scope of the subjoined claim.

Having thus described my invention, I claim An. ornamental radio amplifier com rising -a shell body having a tortuous passage ormed with the lowermost convolution of the passage. y

In testimony whereof I afiix my signature.

JOSEPH V. GODBERY.

'unction with'phonog'raphs and the like for 

